This was taken in 2023 in Hakone's open air museum.
It is a small tower called the symphonic sculpture.
What you are looking at is a test snapshot taken with my phone's wide angle camera before reaching out for my dslr knowing I would not be able acheive the same result since didn't bring a wide enough lens (even though looking back, I should have tried to make a vertorama)
The spiral staircase is climbable, I waited for close to 30 minutes for it to be empty. One side is for going up and the other for going down.
It was shot in raw with a Oppo find X2 pro , there's some heavy editing going on in Lightroom because for some reason, the white balance was extremely off in the raw format which wasn't the case for the jpg (for instance, tint needed to be brought down to -100 🙃 )